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Discussion Starter #1
Hey new Grizzly owner, purchased a new leftover 2016 Grizzly out of a crate.
Before purchase I read about air boxes issues.
Anybody have some advice on whether to grease foam donut and stay stock
or buy EHS air box to retrofit it.
Will be riding mostly in Florida Panhandle near the Gulf
 

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If you have the cash, buy the ehs. It will add more performance, and keep the engine safer. Second option is to buy a billet pod filter mount and a new UNI or Twinair pod filter. You can get a mount from the local parts store, ebay, etc. They will run you anywhere from $12 to $20. Look at some of the threads on here for how to do it. Number three is, you can oil the dounut with a non petroleum based oil. Why non petroleum? Well, petroleum is what messes with the glue. Some also say that you can add a piece of pool noodle foam to make sure it seals up tight.
 
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I use a small piece of a pool noodle cut into a block. It’s wedged in the box behind the filter to hold it tighter to the ring seal


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Discussion Starter #4
I think after the cash I dropped , EHS @ $200 for best option is a no brainer
I was just worried I needed to add more mods like fuel controller ECT...for the EHS airbox
 

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2x EHS everything!
 

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Where you run close to sea level, it might be true that you need a fuel controller. However, a lot of the guys on here run fuel controllers, I think that they would be a worth while mod. you can go sea level to the mountain and just change a few settings. I do think that the EHS is a popular option. I will let the injected guys take over here though. Just want to add that, for the best price, order off of eBay. You might be able to find a second hand controller there as well. I will tag some of the FI guys. @RedRocket @dezz (has a 660 but works on many Grizzlys) @Vincent @LvDirtJunky @reogem
 

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If it were me, I'd do the airbox from EHS as well... I was religious about keeping my filter and o ring oiled and clean, got back from the dakotas this fall and still found dust in my intake... so I immediately ordered the EHS box, and am crossing my fingers I find no issues down the road. :(
 

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I bought a new 2016 in a crate this past October also. Told the dealer about the Filter being bone dry where the foam contacts the housing and made sure it was oiled and sealed well with rim grease before it left the shop the day I picked it up. I have about 400 kms on the bike now most on rough bumpy terrain and the filter is clean, tight against the housing and shows no sign of coming loose. Not doing anything except check it before and after each ride and even during the ride to make sure it is still seated properly. I may do the pool noodle thing as suggested but that will only be if I see any sign of it coming loose which I am pretty certain won't happen in the same way I'm pretty certain the wheels won't fall off during the ride as long as I check the nuts before.

Won't it void the warranty if you mod the Airbox?
 

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The dealership won't ever know as long as you put the stock box back on when you need something fixed under warranty... They'll wonder how the engine is in such good shape. Hehehe.
 

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No "Proper" dealership would give you a hard time over an improved Airbox... BUT, i'd check with your local dealer to see of they are "Proper" or a bunch a nut balls that would report you to yamaha for installing a sticker on your fender.. Some are that bad. some are beyond awesome.. I have not found many "Awesome" ones yet, but most I know would not fault you for having a better sealing air filter.
 
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